|
|||||
|
|
Electronic and magnetic properties of novel layered cobalt dioxides A x CoO2 with A = Li, Na, and K |
|
| Authors: | Jun Sugiyama Yutaka Ikedo Peter L Russo Kazuhiko Mukai Hiroshi Nozaki Jess H Brewer Eduardo J Ansaldo Kim H Chow Daniel Andreica Alex Amato Takenori Fujii Atsushi Asamitsu Kingo Ariyoshi Tsutomu Ohzuku |
| Affiliation: | 1. Toyota Central Research and Development Labs., Inc., 41-1 Yokomichi, Nagakute, Aichi, 480-1192, Japan 2. TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, Canada, V6T 2A3 3. CIFAR, Toronto, ON, Canada, M5G 1Z8 4. Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, Canada, V6T 1Z1 5. Department of Physics, University of Alberta, Edmonton, AB, Canada, T6G 2G7 6. Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institut, Villigen PSI, Switzerland 7. Cryogenic Center, University of Tokyo, Bunkyo-ku, Tokyo, 113-0032, Japan 8. Department of Applied Chemistry, Graduate School of Engineering, Osaka City University, Osaka, 558-8585, Japan |
| Abstract: | In order to elucidate the nature of layered cobalt dioxides A x CoO2, we have investigated their microscopic magnetism by means of positive muon-spin rotation and relaxation (μ+SR) spectroscopy, in particular for A = Li, Na, and K and x = 0.5. It was found that the temperature dependence of the internal antiferromagnetic field of Na0.5CoO2 (NCO) is very similar to that of K0.5CoO2 (KCO), although the former is more magnetically-anisotropic than the latter. On the other hand, Li0.5CoO2 (LCO) lacked magnetic order down to 1.7 K. The clear difference between LCO and NCO (and KCO) is likely to be caused by movement of Li+ ions in LCO, based on the zero-field μ+SR experiment. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |